[gtksourceview/gnome-2-28] Increment the ref count of the buffer and release the reference in _dispose()

[Paolo Borelli <pborelli src gnome org>]

commit 6b3ba1e0e0217e26435861f1fa2a06d2b0a822d8
Author: Emmanuel Rodriguez <emmanuel rodriguez gmail com>
Date:   Sat Oct 31 12:26:50 2009 +0100

    Increment the ref count of the buffer and release the reference in _dispose()

 gtksourceview/gtksourceprintcompositor.c |   20 ++++++++++++++++++--
 1 files changed, 18 insertions(+), 2 deletions(-)
---
diff --git a/gtksourceview/gtksourceprintcompositor.c b/gtksourceview/gtksourceprintcompositor.c
index eb55101..489a812 100644
--- a/gtksourceview/gtksourceprintcompositor.c
+++ b/gtksourceview/gtksourceprintcompositor.c
@@ -297,7 +297,7 @@ gtk_source_print_compositor_set_property (GObject      *object,
 	switch (prop_id)
 	{
 		case PROP_BUFFER:
-			compositor->priv->buffer = GTK_SOURCE_BUFFER (g_value_get_object (value));
+			compositor->priv->buffer = GTK_SOURCE_BUFFER (g_value_dup_object (value));
 			break;
 		case PROP_TAB_WIDTH:
 			gtk_source_print_compositor_set_tab_width (compositor,
@@ -376,7 +376,7 @@ gtk_source_print_compositor_finalize (GObject *object)
 
 	if (compositor->priv->footer_font != NULL)
 		pango_font_description_free (compositor->priv->footer_font);
-		
+
 	g_free (compositor->priv->header_format_left);
 	g_free (compositor->priv->header_format_right);
 	g_free (compositor->priv->header_format_center);
@@ -387,6 +387,21 @@ gtk_source_print_compositor_finalize (GObject *object)
 	G_OBJECT_CLASS (gtk_source_print_compositor_parent_class)->finalize (object);
 }
 
+static void
+gtk_source_print_compositor_dispose (GObject *object)
+{
+	GtkSourcePrintCompositor *compositor;
+
+	compositor = GTK_SOURCE_PRINT_COMPOSITOR (object);
+
+	if (compositor->priv->buffer != NULL) {
+		g_object_unref (compositor->priv->buffer);
+		compositor->priv->buffer = NULL;
+	}
+
+	G_OBJECT_CLASS (gtk_source_print_compositor_parent_class)->dispose (object);
+}
+
 static void						 
 gtk_source_print_compositor_class_init (GtkSourcePrintCompositorClass *klass)
 {
@@ -397,6 +412,7 @@ gtk_source_print_compositor_class_init (GtkSourcePrintCompositorClass *klass)
 	object_class->get_property = gtk_source_print_compositor_get_property;
 	object_class->set_property = gtk_source_print_compositor_set_property;
 	object_class->finalize = gtk_source_print_compositor_finalize;
+	object_class->dispose = gtk_source_print_compositor_dispose;
 
 	/**
 	 * GtkSourcePrintCompositor:buffer: